mirror of
https://github.com/fish-shell/fish-shell.git
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547 lines
8.3 KiB
C
547 lines
8.3 KiB
C
/** \file wutil.c
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Wide character equivalents of various standard unix functions.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <wchar.h>
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#include <string.h>
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#include <dirent.h>
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#include <stdarg.h>
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#include <limits.h>
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#include "util.h"
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#include "common.h"
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#include "wutil.h"
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static char *tmp=0;
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static size_t tmp_len=0;
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int c = 0;
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void wutil_destroy()
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{
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free( tmp );
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tmp=0;
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tmp_len=0;
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debug( 3, L"wutil functions called %d times", c );
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}
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static char *wutil_wcs2str( const wchar_t *in )
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{
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c++;
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size_t new_sz =MAX_UTF8_BYTES*wcslen(in)+1;
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if( tmp_len < new_sz )
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{
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free( tmp );
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tmp = malloc( new_sz );
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if( !tmp )
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{
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die_mem();
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}
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tmp_len = new_sz;
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}
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wcstombs( tmp, in, tmp_len );
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return tmp;
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}
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wchar_t *wgetcwd( wchar_t *buff, size_t sz )
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{
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char buffc[sz*MAX_UTF8_BYTES];
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char *res = getcwd( buffc, sz*MAX_UTF8_BYTES );
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if( !res )
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return 0;
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if( (size_t)-1 == mbstowcs( buff, buffc, sizeof( wchar_t ) * sz ) )
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{
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return 0;
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}
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return buff;
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}
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int wchdir( const wchar_t * dir )
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{
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char *tmp = wutil_wcs2str(dir);
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return chdir( tmp );
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}
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FILE *wfopen(const wchar_t *path, const char *mode)
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{
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char *tmp =wutil_wcs2str(path);
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FILE *res=0;
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if( tmp )
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{
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res = fopen(tmp, mode);
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}
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return res;
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}
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FILE *wfreopen(const wchar_t *path, const char *mode, FILE *stream)
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{
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char *tmp =wutil_wcs2str(path);
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FILE *res=0;
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if( tmp )
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{
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res = freopen(tmp, mode, stream);
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}
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return res;
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}
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int wopen(const wchar_t *pathname, int flags, ...)
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{
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char *tmp =wutil_wcs2str(pathname);
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int res=-1;
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va_list argp;
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if( tmp )
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{
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va_start( argp, flags );
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if( ! (flags & O_CREAT) )
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res = open(tmp, flags);
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else
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res = open(tmp, flags, va_arg(argp, int) );
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va_end( argp );
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}
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return res;
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}
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int wcreat(const wchar_t *pathname, mode_t mode)
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{
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char *tmp =wutil_wcs2str(pathname);
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int res = -1;
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if( tmp )
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{
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res= creat(tmp, mode);
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}
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return res;
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}
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DIR *wopendir(const wchar_t *name)
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{
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char *tmp =wutil_wcs2str(name);
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DIR *res = 0;
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if( tmp )
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{
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res = opendir(tmp);
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}
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return res;
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}
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int wstat(const wchar_t *file_name, struct stat *buf)
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{
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char *tmp =wutil_wcs2str(file_name);
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int res = -1;
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if( tmp )
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{
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res = stat(tmp, buf);
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}
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return res;
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}
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int lwstat(const wchar_t *file_name, struct stat *buf)
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{
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char *tmp =wutil_wcs2str(file_name);
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int res = -1;
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if( tmp )
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{
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res = lstat(tmp, buf);
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}
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return res;
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}
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int waccess(const wchar_t *file_name, int mode)
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{
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char *tmp =wutil_wcs2str(file_name);
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int res = -1;
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if( tmp )
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{
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res= access(tmp, mode);
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}
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return res;
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}
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void wperror(const wchar_t *s)
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{
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if( s != 0 )
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{
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fwprintf( stderr, L"%ls: ", s );
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}
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fwprintf( stderr, L"%s\n", strerror( errno ) );
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}
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#if !HAVE_WPRINTF
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/*
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Here is my own implementation of *wprintf, included since NetBSD does
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not provide one of it's own.
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*/
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/**
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This function is defined to help vgwprintf when it wants to call
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itself recursively
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*/
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static int gwprintf( void (*writer)(wchar_t),
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const wchar_t *filter,
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... );
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/**
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Generic formatting function. All other formatting functions are
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secretly a wrapper around this function.
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*/
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static int vgwprintf( void (*writer)(wchar_t),
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const wchar_t *filter,
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va_list va )
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{
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const wchar_t *filter_org=filter;
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int count=0;
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for( ;*filter; filter++)
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{
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if(*filter == L'%')
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{
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int i;
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int is_long=0;
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int width = 0;
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filter++;
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int loop=1;
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int precision=INT_MAX;
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while( loop )
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{
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switch(*filter)
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{
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case L'l':
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/* Long variable */
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is_long++;
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filter++;
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break;
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case L'*':
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/* Set minimum field width */
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width = va_arg( va, int );
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filter++;
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break;
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case L'.':
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/*
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Set precision.
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Hasn't been tested enough yet, so I don't really trust it.
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*/
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filter++;
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if( *filter == L'*' )
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{
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precision = va_arg( va, int );
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}
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else
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{
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while( (*filter >= L'0') && (*filter <= L'9'))
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{
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precision=10*precision+(*filter - L'0');
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}
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}
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break;
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default:
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loop=0;
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break;
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}
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}
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switch( *filter )
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{
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case L'c':
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{
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wchar_t c;
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c = is_long?va_arg(va, wchar_t):btowc(va_arg(va, int));
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if( width )
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{
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int i;
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for( i=1; i<width; i++ )
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{
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writer( L' ' );
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count++;
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}
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}
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if( precision != 0 )
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writer( c );
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count++;
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break;
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}
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case L's':
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{
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wchar_t *ss = is_long?va_arg(va, wchar_t*):str2wcs(va_arg(va, char*));
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if( !ss )
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return -1;
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if( width )
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{
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int i;
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for( i=wcslen(ss); i<width; i++ )
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{
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writer( L' ' );
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count++;
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}
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}
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wchar_t *s=ss;
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int precount = count;
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while( *s )
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{
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if( (precision <= (count-precount) ) )
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break;
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writer( *(s++) );
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count++;
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}
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if( !is_long )
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free( ss );
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break;
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}
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case L'd':
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case L'i':
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{
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char str[32];
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switch( is_long )
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{
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case 0:
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{
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int d = va_arg( va, int );
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snprintf( str, 32, "%.*d", precision, d );
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break;
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}
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case 1:
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{
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long d = va_arg( va, long );
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snprintf( str, 32, "%.*ld", precision, d );
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break;
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}
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case 2:
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{
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long long d = va_arg( va, long long );
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snprintf( str, 32, "%.*lld", precision, d );
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break;
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}
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default:
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return -1;
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}
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if( width )
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{
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int i;
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for( i=strlen(str); i<width; i++ )
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{
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writer( L' ' );
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count++;
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}
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}
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int c = gwprintf( writer, L"%s", str );
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if( c==-1 )
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return -1;
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else
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count += c;
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break;
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}
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case L'u':
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{
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char str[32];
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switch( is_long )
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{
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case 0:
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{
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unsigned d = va_arg( va, unsigned );
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snprintf( str, 32, "%d", d );
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break;
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}
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case 1:
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{
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unsigned long d = va_arg( va, unsigned long );
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snprintf( str, 32, "%ld", d );
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break;
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}
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case 2:
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{
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unsigned long long d = va_arg( va, unsigned long long );
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snprintf( str, 32, "%lld", d );
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break;
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}
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default:
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return -1;
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}
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if( width )
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{
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int i;
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for( i=strlen(str); i<width; i++ )
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{
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writer( L' ' );
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count++;
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}
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}
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int c = gwprintf( writer, L"%s", str );
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if( c==-1 )
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return -1;
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else
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count += c;
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break;
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}
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case L'n':
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{
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int *n = va_arg( va, int *);
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*n = count;
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break;
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}
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default:
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debug( 0, L"Unknown switch %lc in string %ls\n", *filter, filter_org );
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exit(1);
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}
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}
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else
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{
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writer( *filter );
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count++;
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}
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}
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return count;
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}
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static int gwprintf( void (*writer)(wchar_t),
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const wchar_t *filter,
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... )
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{
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va_list va;
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va_start( va, filter );
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int written=vgwprintf( writer,
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filter,
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va );
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va_end( va );
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return written;
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}
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/**
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Holds data for swprintf writer
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*/
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static struct
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{
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int count;
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int max;
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wchar_t *pos;
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}
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sw_data;
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/**
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Writer for swprintf
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*/
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static void sw_writer( wchar_t c )
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{
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if( sw_data.count < sw_data.max )
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*(sw_data.pos++)=c;
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sw_data.count++;
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}
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int swprintf( wchar_t *out, size_t n, const wchar_t *filter, ... )
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{
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va_list va;
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va_start( va, filter );
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sw_data.pos=out;
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sw_data.max=n;
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sw_data.count=0;
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int written=vgwprintf( &sw_writer,
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filter,
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va );
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if( written < n )
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{
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*sw_data.pos = 0;
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}
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else
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{
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written=-1;
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}
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va_end( va );
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return written;
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}
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/**
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Holds auxiliary data for fwprintf and wprintf writer
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*/
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static FILE *fw_data;
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static void fw_writer( wchar_t c )
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{
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putw( c, fw_data );
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}
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/**
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Writer for fwprintf and wprintf
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*/
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int fwprintf( FILE *f, const wchar_t *filter, ... )
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{
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va_list va;
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va_start( va, filter );
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fw_data = f;
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int written=vgwprintf( &fw_writer, filter, va );
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va_end( va );
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return written;
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}
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int wprintf( const wchar_t *filter, ... )
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{
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va_list va;
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va_start( va, filter );
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fw_data = stdout;
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int written=vgwprintf( &fw_writer, filter, va );
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va_end( va );
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return written;
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}
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#endif
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